Resin coating pipe and manufacturing method thereof, and fuel tank with resin coating pipe
AssigneeHit Kougyo Kabushiki Kaisha
InventorJun Hirano
Life of this patent
Estimating the term…
Abstract
A resin coating pipe wherein a peripheral surface near an end portion of a pipe material (6) is masked through a specified length, and a resin coating layer (7 or 7a) is formed on a rest portion of a surface of the pipe material (6), and the masked portion is made to be an insertion portion (8 or 8a) to be inserted tightly into an inside diameter portion of another fitting member (4), said resin coating layer (7 or 7a) has its end portion being pressurized, and at that portion, a resin connecting portion (17 or 17a) extending along the insertion portion (8 or 8a) and capable of being fitted into an inside diameter portion of another fitting member (4) together with the insertion portion (8 or 8a), is formed.
Claims4
A resin coating pipe, wherein a peripheral surface near an end portion of a pipe material is masked through a specified length, and a resin coating layer is formed on a rest portion of a surface of the pipe material, and the masked portion is made to be an insertion portion to be inserted tightly into an inside diameter portion of another fitting member, said resin coating layer has its end portion being pressurized, and at that portion, a resin connecting portion extending along the insertion portion and capable of being fitted into the inside diameter portion of said another fitting member together with the insertion portion, is formed.
A manufacturing method of a resin coating pipe which comprises:
- a masking step to fit a masking member onto an end portion of a pipe material, said masking member is formed approximately in a cylindrical shape and has a mold work portion provided in an inside diameter portion on an inlet side thereof;
- a coating step to form a resin coating layer onto a rest portion of a surface of the pipe material;
- and
- a molding step to slide the masking member in the axial direction toward a portion onto which the resin coating layer is formed, so as to pressurize an end portion of the resin coating layer by the mold work portion of the masking member, and to form a resin connecting portion which extends along the insertion potion and is capable of being fitted into an inside diameter portion of another fitting portion together with the insertion portion.
A manufacturing method of a resin coating pipe which comprises:
- a masking step to fit a masking member onto an end portion of a pipe material, said masking member is formed approximately in a cylindrical shape from an elastic material and has a press fit portion with an inside diameter to be fitted by pressurizing onto the periphery of the pipe material;
- a coating step to form a resin coating layer onto a rest portion of a surface of the pipe material;
- and
- a molding step to slide the masking member in the axial direction toward a portion onto which the resin coating layer is formed, so as to pressurize an end portion of the resin coating layer by allowing the press fit portion of the masking member run onto the end portion of the resin coating layer, and to form a resin connecting portion which extends along the insertion potion and is capable of being fitted into an inside diameter portion of another fitting portion together with the insertion portion.
Dependencies are inferred from the claim text.